package com.atguigu.gulimall.auth.controller;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.AuthServerConstant;
import com.atguigu.common.exception.BizCodeEnume;
import com.atguigu.common.utils.R;
import com.atguigu.common.vo.MemberRespVo;
import com.atguigu.gulimall.auth.constant.AuthenticationConstant;
import com.atguigu.gulimall.auth.feign.MemberFeignService;
import com.atguigu.gulimall.auth.feign.ThirdPartFeignService;
import com.atguigu.gulimall.auth.vo.UserLoginVo;
import com.atguigu.gulimall.auth.vo.UserRegistVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.util.StringUtils;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

@Controller
public class LoginController {
    @Autowired
    ThirdPartFeignService thirdPartFeignService;
    @Autowired
    StringRedisTemplate redisTemplate;
    @Autowired
    MemberFeignService memberFeignService;

    @GetMapping("/sms/sendCode")
    @ResponseBody
    public R sendCode(@RequestParam("phone") String phone) {
//         1.接口防刷
//         2.验证码再次校验 sms-code:xxxxxx
        String redisCode = redisTemplate.opsForValue().get(AuthenticationConstant.SMS_CODE_EXPIRE_PREFIX + phone);
        if (!StringUtils.isEmpty(redisCode)) {
            long l = Long.parseLong(redisCode.split("_")[1]);
            if (System.currentTimeMillis() - l < 60000) {
                //60秒内不能再发
                return R.error(BizCodeEnume.SMS_CODE_EXCEPTION.getCode(), BizCodeEnume.SMS_CODE_EXCEPTION.getMsg());
            } else {

            }
        }
        StringBuilder stringBuilder = new StringBuilder();
        for (int i = 0; i < 5; i++) {
            stringBuilder.append((int) (Math.random() * 10));
        }
        String code = stringBuilder.toString();
        String redisValue = code + "_" + System.currentTimeMillis();
        redisTemplate.opsForValue().set(AuthenticationConstant.SMS_CODE_EXPIRE_PREFIX + phone, redisValue, 10, TimeUnit.MINUTES);

        R r = thirdPartFeignService.sendCode(phone, code);
        return R.ok();
    }

    @PostMapping("/regist")
    public String regist(@Valid UserRegistVo vo, BindingResult result, RedirectAttributes redirectAttributes,
                         HttpSession session) {
        if (result.hasErrors()) {

            Map<String, String> errors = result.getFieldErrors().stream().collect(Collectors.toMap(FieldError::getField, FieldError::getDefaultMessage
            ));
            redirectAttributes.addFlashAttribute("errors", errors);
            //post不支持

            //检查错误
            return "redirect:http://auth.gulimall.com/reg.html";
        }
        //真正注册，调用远程服务
        //1.校验验证码
        // 正确性校验
        String code = vo.getCode();
        String s = redisTemplate.opsForValue().get(AuthenticationConstant.SMS_CODE_EXPIRE_PREFIX + vo.getPhone());

        if (!StringUtils.isEmpty(s) ) {
            if(code.equals(s.split("_")[0])){
                //删除验证码,令牌机制
                redisTemplate.delete(AuthenticationConstant.SMS_CODE_EXPIRE_PREFIX + vo.getPhone());
                //验证码通过
                R r = memberFeignService.regist(vo);
                if(r.getCode()==0){
                    return "redirect:http://auth.gulimall.com/login.html";
                }else {
                    Map<String, String> errors = new HashMap<>();
                    errors.put("msg",r.getData("msg",new TypeReference<String>(){}));
                    redirectAttributes.addFlashAttribute("errors", errors);

                    return "redirect:http://auth.gulimall.com/reg.html";
                }
            }else {
                HashMap<String, String> errors = new HashMap<>();
                errors.put("code","验证码错误");
                redirectAttributes.addFlashAttribute("errors", errors);
                return "redirect:http://auth.gulimall.com/reg.html";
            }
        }else {
            HashMap<String, String> errors = new HashMap<>();
            errors.put("code","验证码错误");
            redirectAttributes.addFlashAttribute("errors", errors);
            return "redirect:http://auth.gulimall.com/reg.html";
        }

    }
    @PostMapping("/login")
    public String login(UserLoginVo vo,RedirectAttributes redirectAttributes,HttpSession session){
    //远程登录
        R login = memberFeignService.login(vo);
        if(login.getCode()==0){
            MemberRespVo data = login.getData("data", new TypeReference<MemberRespVo>() {
            });
            session.setAttribute(AuthServerConstant.LOGIN_USER,data);
            return "redirect:http://gulimall.com";
        }else {
            Map<String,String> errors = new HashMap<>();
            errors.put("msg",login.getData("msg",new TypeReference<String>(){}));
            redirectAttributes.addFlashAttribute("errors",errors);
             return "redirect:http://auth.gulimall.com/login.html";
        }

    }
    @GetMapping("/login.html")
    public String loginHtml(HttpSession session) {
        if (session.getAttribute(AuthServerConstant.LOGIN_USER) == null) {
            return "login";
        } else {
            return "redirect:http://gulimall.com";
        }
    }
}